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Known as standard duplexers, notch duplexers reject the frequency unwanted on the port used - the RX port rejects the transmit signal and TX port rejects the RX signal. This ensures there is no crosstalk between TX and RX and allows a repeater to use a single antenna.
Our duplexers are made to highest standards and are available in various bands with band appropriate TX/RX separation and excellent isolation.
ND-UHF-30-5-7: 30W; UHF2 430-470 MHz; 5-7 MHz Separation
ND-UHF-50-10-20: 30W UHF1 400-450 MHz; 10-20 MHz Separation
ND-VHF-50: 50W VHF Mid & High Band; 4-5 MHz Separation
Bandpass (or pass band) duplexers only allow the designed frequency (or a span of frequencies) through the desired port.
The advantage of a bandpass duplexer is that, because it only allows the desired frequency through each port, it also blocks out the majority of unwanted harmonics, reducing the need for harmonic filters.